ST72561J9-Auto STMicroelectronics, ST72561J9-Auto Datasheet - Page 191

• Manufacturer Part Number: ST72561J9-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72561J9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years at 55 °C
• 5 Power Saving Modes: halt, auto wake up from halt, active halt, wait and slow

ST72561-Auto
Table 68.
1.
2.
Examples of LDIV coding:
Example 1:
LPR = 27d and LPFR = 12d
This leads to:
Mantissa (LDIV) = 27d
Fraction (LDIV) = 12/16 = 0.75d
Therefore LDIV = 27.75d
Example 2:
LDIV = 25.62d
This leads to:
LPFR = rounded(16*0.62d) = rounded(9.92d) = 10d = Ah
LPR = mantissa (25.620d) = 25d = 1Bh
Example 3:
LDIV = 25.99d
This leads to:
LPFR = rounded(16*0.99d) = rounded(15.84d) = 16d
The carry must be propagated to the mantissa:
LPR = mantissa (25.99) + 1 = 26d = 1Ch
When initializing LDIV, the LPFR register must be written first. Then, the write to the
LPR register will effectively update LDIV and so the clock generation.
In LIN slave mode, if the LPR[7:0] register is equal to 00h, the transceiver and receiver
input clocks are switched off.
LPFR[3:0]
LDIV fraction
Eh
0h
1h
Fh
...
LINSCI serial communication interface (LIN master/slave)
Doc ID 12370 Rev 8
Fraction (LDIV)
14/16
15/16
1/16
...
0
191/324